26660223420 has 48 divisors (see below), whose sum is σ = 75671221920. Its totient is φ = 7012002816.

The previous prime is 26660223383. The next prime is 26660223431. The reversal of 26660223420 is 2432206662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3039025 + ... + 3047784.

It is an arithmetic number, because the mean of its divisors is an integer number (1576483790).

Almost surely, 2^26660223420 is an apocalyptic number.

26660223420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26660223420 is an abundant number, since it is smaller than the sum of its proper divisors (49010998500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26660223420 is a wasteful number, since it uses less digits than its factorization.

26660223420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6086894 (or 6086892 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

The spelling of 26660223420 in words is "twenty-six billion, six hundred sixty million, two hundred twenty-three thousand, four hundred twenty".